Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual HAAT tem um Channels TV / RF de 31 (psip) 44 (uhf)
 ###Tabelas: CREATE TABLE top_projects_by_funds_raised (top_projects_by_funds_raised_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Total USD INT, Project name VARCHAR, Creator VARCHAR, Category VARCHAR, % funded INT, Backers INT, Closing date VARCHAR) CREATE TABLE 2000_nfl_draft (2000_nfl_draft_id AUTO_INCREMENT PRIMARY KEY, Round INT, Overall INT, Player VARCHAR, Position VARCHAR, College VARCHAR) CREATE TABLE brazil's_20_busiest_airports_by_passenger_traffic (brazil's_20_busiest_airports_by_passenger_traffic_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Location VARCHAR, Total Passengers INT, Annual change VARCHAR, Capacity INT, Capacity in use VARCHAR) CREATE TABLE england_in_west_indies (england_in_west_indies_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Home captain VARCHAR, Away captain VARCHAR, Venue VARCHAR, Result VARCHAR) CREATE TABLE stations (stations_id AUTO_INCREMENT PRIMARY KEY, Station VARCHAR, City of license VARCHAR, Channels TV / RF VARCHAR, First air date VARCHAR, HAAT VARCHAR, Facility ID INT, Public license information VARCHAR)  
SELECT HAAT FROM stations WHERE Channels TV / RF = 31 (psip) 44 (uhf)